1) (1/3 + 1/2) x = 3,75(2/6 + 3/6) x = 3,755/6 x = 3,75x = 3,75 / (5/6)x = 3,75 (6/5)x = 4,5
2) (3/5 - 0,25) x = 4,9(3/5 - 1/4) x = 4,9(12/20 - 5/20) x = 4,97/20 x = 4,9x = 4,9 / (7/20)x = 4,9 * (20/7)x = 14
3) (7/8 - 0,2) x = 8,1(7/8 - 2/10) x = 8,1(35/40 - 8/40) x = 8,127/40 x = 8,1x = 8,1 / (27/40)x = 8,1 * (40/27)x = 12
1) (1/3 + 1/2) x = 3,75
(2/6 + 3/6) x = 3,75
5/6 x = 3,75
x = 3,75 / (5/6)
x = 3,75 (6/5)
x = 4,5
2) (3/5 - 0,25) x = 4,9
(3/5 - 1/4) x = 4,9
(12/20 - 5/20) x = 4,9
7/20 x = 4,9
x = 4,9 / (7/20)
x = 4,9 * (20/7)
x = 14
3) (7/8 - 0,2) x = 8,1
(7/8 - 2/10) x = 8,1
(35/40 - 8/40) x = 8,1
27/40 x = 8,1
x = 8,1 / (27/40)
x = 8,1 * (40/27)
x = 12